Employee Benefit Plans - Additional Information (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Defined Benefit Plan Disclosure [Line Items]
Market cycle minimum period in which objective should be met over	3 years
Market cycle maximum period in which objective should be met over	5 years
Duration of Treasury bills	90 days
Cash equivalent and short-term investments should achieve relative performance	Better than the 90-day Treasury bills
Percentage of total fixed income exposure from any single non-government or government agency issuer	42.00%
Total fixed income exposure from any single non-government or government agency issuer	Shall not exceed 42 percent of the Trust’s fixed income holdings.
Average duration of the portfolio	1 year 6 months
Investment equity securities	$ 0	$ 0
Percentage of no single security made up of total assets	10.00%
Percentage of no single security made up of total assets of either the U.S. or the Non-U.S. plans	More than 10 percent
Number of years of service for the participants in the plan to become fully vested	3 years
Cash Holdings [Member]
Defined Benefit Plan Disclosure [Line Items]
Percentage of company's overall investments	1.50%
Investment Manager 1 [Member]
Defined Benefit Plan Disclosure [Line Items]
Performance objective communicated to investment managers	To exceed a blend of FTSE A Over 15 Year Gilts index and iBoxx Sterling Non Gilts index by 1.25 percent per annum.
Interest rate range maximum	1.25%
Investment Manager 2 [Member]
Defined Benefit Plan Disclosure [Line Items]
Performance objective communicated to investment managers	To exceed a blend of FTSE’s All Share index, North America index, Europe index and Pacific Basin index by 1.00 to 2.00 percent per annum.
Interest rate range maximum	2.00%
Interest rate range minimum	1.00%
Equity Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Percentage of company's overall investments	66.50%
Equity Securities [Member] | Minimum [Member] | International Countries [Member]
Defined Benefit Plan Disclosure [Line Items]
Percentage of company's overall investments	20.00%
Equity Securities [Member] | Maximum [Member] | International Countries [Member]
Defined Benefit Plan Disclosure [Line Items]
Percentage of company's overall investments	23.00%
Equity Securities [Member] | Maximum [Member] | Country One [Member]
Defined Benefit Plan Disclosure [Line Items]
Percentage of company's overall investments	30.00%
Debt Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Percentage of company's overall investments	32.00%
401(K) Savings Plan, a Medical Plan and Other Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Contribution to benefit plan	$ 55,000	70,000	$ 80,000
Non-U.S. Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Net pension expense	2,636	4,125	6,415
Estimated prior service cost	100
Estimated net actuarial loss	200
Accumulated benefit obligation	1,853	1,355
Employer contributions	2,182	6,863	9,000
Expected contribution to non-U.S. and U.S pension plans during 2016	2,000
Non-U.S. Plans [Member] | Projected benefit obligation [Member]
Defined Benefit Plan Disclosure [Line Items]
Projected benefit obligation	4,317	3,157
U.S. Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Curtailment Expense		18,178
Settlement Expense		34,397
Net pension expense	10,948	17,114	14,537
Estimated prior service cost	100
Estimated net actuarial loss	4,400
Accumulated benefit obligation	174,105	202,716
Employer contributions	548	2,017	6,000
Expected contribution to non-U.S. and U.S pension plans during 2016	3,000
U.S. Plans [Member] | Projected benefit obligation [Member]
Defined Benefit Plan Disclosure [Line Items]
Projected benefit obligation	202,566	238,072
U.S. Plans [Member] | Retirement Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Pension liability	(3,000)	14,000
U.S. Plans [Member] | Unfunded Excess Benefit Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Accumulated benefit obligation	15,000	13,000
U.S. Plans [Member] | Unfunded Excess Benefit Plan [Member] | Projected benefit obligation [Member]
Defined Benefit Plan Disclosure [Line Items]
Projected benefit obligation	$ 23,000	20,000
Noble Resources Limited [Member]
Defined Benefit Plan Disclosure [Line Items]
Percentage of company's overall investments	100.00%
Noble Drilling (Land Support) [Member] | Equity Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Percentage of targeted asset allocation	70.00%
Noble Drilling (Land Support) [Member] | Debt Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Percentage of targeted asset allocation	30.00%
Restoration Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Liability under the restoration plan	$ 8,000	7,000
Noble Drilling Corporation Profit Sharing Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Contribution to benefit plan	$ 6,000	6,000	5,000
Paragon Offshore [Member]
Defined Benefit Plan Disclosure [Line Items]
Curtailment Expense		200
Settlement Expense		10,000
Paragon Offshore [Member] | Non-U.S. Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Net pension expense		2,000	4,000
Paragon Offshore [Member] | U.S. Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Net pension expense		$ 11,000	$ 4,000